Multiple flywheel



Oct. 30, 1928. 1,689,913

J. o. CARREY MUL'IPLE FLY WHEEL Filed Sept. 18, 1925 2 Sheets-Sheet l 4El 1.- fr,

WL- J//J e 1 1,689,913 J. o. CARREY MULTIPLE FLY WHEEL Filed sept.18.1925 2 sheets-sheet 2 ELSE- -Psasaaoasaisza l yL Jiairrz'li, sra-TESA"12aifi?.isi.,'ro'r-l-icyrs.

'son o. canin, or sr. Louis, Inserm, assioma 'ro cmarqronsnfnfenuameconm, 4or sr. Louis, nrssoimrfiiA concurrencia' xissoun'r' li'ULriru.nrwmr.;

' lifzype disclosed in i The object of the I provide mechanismorcontrolling the enfapplication niea'sepninr is. m5,;- l'erisi n'.uniss.

This invention relates to new and useful' improvements in multipleyiliy'nwheelsof-the Y my cope gapplication led Octoberl 30, 1924, SeialNo. 746,176,

wherein the fly wheelis composedpf two or more sections, one of which isin\positive driving connection with a suitable -prime Amover, suchfas anelectric motor, and the other section or sections are adapted' to enteilinto driving engagement with the first section and operate in unisontherewith when the latter attains the proper speed. resent invention isto gement between the driving and driven y wheel sections whereby saiddriven section is positively withheld from engagement with the drivingsection until the latter has reached the required speed.

Further objects of the invention are to provide means for normall.maintaining the two fly wheel sections positively disenga ed from eachother, said means being opera le by centrifugal action toreleasesuitablemechanism for effecting theinterengagement of said fly wheel sectionswhen the actuated or driving fly wheel section has reached its normaloperative speed. y

Other ob'ects of the invention are to p ro` vide centri gally controlledmeans for automatically engaging or releasing clutch members carried ythe driving section soas to automatically eiect the engagementvordisengagement of the two ily wheel sections.A

With these and other objects in view, my invention consists in certainnovelfea'tures of construction and arrangement of hereinafter more fullydescribed and claimed,

Figure 3 but showing the and illustrated in the accompanying drawin inwhichigure 1 is a side elevational view showing the multiple ily wheelinterposed between an electric motor and the apparatus to be driventhereby.

Figure 2 is a vertical cross section through said fly wheel.' v

Figure 3 is a transverse cross section taken on line 3 3 of Figure 2.

Figure 4 is a detail cross section taken on line 4 4 of Figure 3.

Figure 5 is an enlarged view similar to parts in moved or interengagedpositions.

Figure 61s a perspective detail view of one of the frictionalmembersutilized for eifect- This gradual outward movement of the c utch parts,

for locking said frictional members in disengaged or retractedpositions.

In the operation` of my'sectional il wheel it was vfound thatthe movableclutc mem-l bers carried by the drivin fly wheel section would mo veoutwardly gra ually as the speed of the driving section increased andbefore said section reached its predetermined s ed.

members would create. friction and retard the operation of the drivingdy wheel section so that it would require a longer time for the lattertoA reach its proper speed, and in the 7h means time cause untimelyoperation of the driven .fl wheel section or slip age between the clutcmembers and said driven ily wlieell section. the present invention, theclutchor frictional members are positively held against outward movementuntil the drivin ily wheel section has reached its proper speed whensaid friction members are released and are free to move b centrifugalaction into engagement with t e driven ily wheel section. In this mannerall unnecessaryfriction and the consequent wear and tear on the frictionmembers is eliminated and the two fly wheelsections are positivelyinterengaged and disengaged at the proper speeds.

Referring by numeralsto the accompanying drawin y A indicates anapparatus which it is desire to operate, such asa compressor, B is aprime mover, in the present instance an electric motor, and C is themultiple fly wheel establishing operative connection between shaft 10 ofapparatus A and shaft 11 of motor B. This wheel C consists, inthepresent instance, o vtwo sections, driving section 12 which is fixed toShaft 11 and driven section 14 which is fixed to shaft 10. Thesesections are substantially of the same diameter and occupy positionsadjacent to and in coaxial relation with each other. Section 12 isproloo has an enlarged bore 15in which is arranged suitable material 16for receivin the extreme Aend l0 of shaft 10 which pro]ects past the 105driven section 14. .Section 12 is formed with 'a flat face 12 facingsection 14 and movably mounted on said face is a air of segmental pieces17 which are movab e in radial direction. l They are held in position byscrews or 110 'lla I is provided with an annular flange 14 whichprojects laterally and has its face arranged adjacent to face l2b therebeing sufficient operating clearance left therebetween. Each segmentalpiece 17 is provided with a laterally projecting iange 17 b which hasarranged on its outer face a layer of suitable material, such l' asbrake lining, which is adapted when sections 17 are moved into ex andedpositions to en age the inner circular ace of flange 14, there yestablishing driving connection between the two fly wheel sections.Sections 17 are held in contracted positions b coiled springs 19 asshown in Figure 3 so t at normally said sections occupy contracted orinner positions as shown in said figure. When in this position, saidpieces are locked against outward movement by hooks 20 which arepivotally mounted at 21 to each of said segmental pieces and engage lugs22 formed on the op osite ieces. These hooks are provided wit weig tedextensions 23 which are desi ed to be operated by centrifugal action wien section 12 is operated at the proper speed to move said hooks out ofengagement with said lugs, thereby permitting segmental pieces 17 to fiyoutwardly into engagement with the liange 14 of section 14. Preferably,one end of each spring 19 is connected at one end to a pin 24 seated inpiece 17 and at the opposite end to a pin 25 carried by weightedextension 23 of the opposite piece so that one set of s rings can beused for -retaining pieces 17 and ooks 2O in closed positions.

The sections 12 and 14 combined constitute the fly wheel of the desiredWeight and dimensions and the weight of section 12 is preferably lessthan the weight of section 14 in order to facilitate the startingoperation of the prime mover. The hooks or locking members 2O serve assafety or control means preventing untimely outward movement ofrictional members 17 thereby insurin the operation of section 12 atproper speed efore section 14 is cut in. As soon as the speed fallsbelow a certain degree, springs 19 overcome the centrifugal action andretract blocks 17, thereby disengaging the two sections. When inretracted positions, blocks 17 are engaged by hooks 20, which lock saidblocks against outward movement until section 12 reaches a speedsufficient to overcome by centrifugal action springs 19 and actuateextensions 23, causing thereby hooks 2O to move into releasing position.

I claim Y 1. In a' multiple fly wheel, the combination of a pair ofcoaxial fly wheel sections of substantially equal diameters, one ofwhich is provided with an annular flange resented toward the othersection, a plurality of segmental pieces movably mounted on said othersection and enclosed b said annular flange and provided with peripheralconvex portions adapted to en age the concave face of the .flange of therst section, said pieces being operable by centrifugal action, coilsprings for retracting said pieces, and a retaining member pivotallymounted on each segmental piece and adapted to engage the opposite pieceand lock the latter in retracted position, said retaining meinbeis beingoperable by centrifugal action to release said pieces at a speedlgreater than that required to operate said segmental pieces to insureproper operative engagement of the latter with said annular flange.

2. In a multiple fiy wheel, the combination of a pair of coaxial flywheel sections, one of which is provided with an 'annular flangedisposed laterally adjacent to the other section, a plurality ofsegmental pieces mounted on said other section for movement in radialdirections with respect to the axes of said sections and provided withperipheral convex portions adapted to engage the concave face of theflange of the first section, said segmental pieces being operable'bycentrifugal action, coil springs for retractmg said pieces, a retainingmember pivotall mounted on each of said pieces and adapte to engage theopposite piece and locl said pieces in retracted positions, saidretaining members being operable by centrifugal action to release saidsegmental pieces at a speed greater than that required to operate saidsegmental pieces, said coil springs being connected at their oppositeends to said segmental pieces and the corresponding retaining membersfor maintaining said segmental pieces in locking engagement with saidretaining members.

3. In a multiple fly wheel, the combination of a driving ily wheelsection and a driven ily wheel section arranged coaxially and adj acentto each other, the latter being provided with a laterally projectingannular flange, segmental pieces mounted on the face of said driving flywheel section and enclosed by said fiange, said segmental pieces beingmovable in radial direction relative to the axes of said sections, coilsprings for maintaining said segmental pieces in retracted positions,said segmental pieces being movable outwardly by centrifugal action, andhooks pivotally mounted on said segmental pieces and adapted to engagelaterally projecting lugs of the opposite pieces, said hooks beingadapted to hold said segmental pieces in retracted positions and havingweighted extensions whereby said hooks are operated by centrifugalaction to release said pieces at predetermined speeds for permittingsaid lsegmental pieces la airo to move outwardly into engagement withthe flange of the driven fly wheel section.

4. A il wheel `comprising in combination airiall aligned sectionsmounted in ependently o each other in juxtaposed relation, one of saidsections belng positively driven and the other section" being providedwith a recess forming an internal circular face, a plurality ofsegmental blocks mounted on the first section and movable undercentrifugal action transversely of the axis of rotation into operativeengagement with said second section, thereby interengaging saidsections, laterally projecting lugs on said blocks, and a weighted hookpivotally mounted on each block and engaging the lug of the oppositeblock for preventing the untimely outward movement of said blocks, saidhooks being operable to release said blocks at 'a greater speed thanthat required to operate said segmental blocks whereby when the latterare released the are brought into positive engagement with the internalcircular face of the other section.

5. A fl wheel comprising in combination a pair o axially alignedsections mounted independently of each other in juxtaposed relation, oneof said sections being positivelyl driven and the other section beingprovided with a recess forming an internal circular face, a plurality ofsegmental blocks mounted on the rst section and enclosed in said recess,said blocks being movable under centrif-V ugal action radially relativeto the axis of said section into operative engagement with said secondsection thereby inter-engaging said sections, lugs laterally projectingon said blocks, a hook ivotally mounted on each .block and engaging thelug. of the opposite signature this fifteenth day of July, 1925.

JOHN O. CARREY.

